DHS 163.14(4)(f)(f) Using a heat gun. When a certified person removes paint with a heat gun, he or she shall operate the heat gun at a temperature below 1100° F.

DHS 163.14(5)(a)1.1. A certified lead hazard investigator, inspector or risk assessor may conduct clearance for any lead hazard reduction or renovation activity.

DHS 163.14(5)(a)3.3. The certified individual conducting clearance shall be associated with a certified lead company.

DHS 163.14(5)(b)(b) Prohibitions on who may conduct. The person conducting clearance may not do any of the following:

DHS 163.14(5)(b)1.1. Be the company or associated by employment, contract or other agreement with the company that performs or pre-cleans the lead hazard reduction or renovation activity being cleared.

DHS 163.14(5)(b)4.4. Be a company or associated with a company that is directly or beneficially owned, controlled or managed by the property owner, or by an immediate family member, agent or employee of the property owner.

DHS 163.14(5)(b)5.5. Be a person hired by or under contract with, or authorized by, the property owner to manage or maintain the property owner’s real property as directed by the property owner.

DHS 163.14(5)(c)(c) Clearance protocol. In performing clearance, the certified lead hazard investigator, inspector, risk assessor or sampling technician shall comply with all of the following in an unbiased, objective and impartial manner:

DHS 163.14(5)(c)1.1. ‘Visual inspection of work.’ Perform a visual inspection to determine if work specified in any contract, work plans, orders or other specifications has been completed and if any visible amounts of dust, debris or residue are present. If work has not been completed or if visible amounts of dust, debris or residue are present, the person who performed the activity being cleared shall eliminate these conditions prior to the continuation of the clearance procedures.

DHS 163.14(5)(c)2.2. ‘Timing of sampling.’ Following a successful visual inspection and a minimum of one hour after completion of final cleanup activities, conduct clearance sampling for dust-lead by collecting single-surface dust samples using documented methodologies that incorporate adequate quality control procedures.

DHS 163.14(5)(c)3.a.a. In at least 4 rooms, hallways, stairwells or other living areas within the containment area, collect one dust sample from one interior windowsill or one window trough, if available, and one dust sample from the floor. If there are fewer than 4 rooms, hallways, stairwells or other living areas within the containment area, collect samples from one interior windowsill or one window trough, if available, and one dust sample from the floors of all rooms, hallways, stairwells or other living areas within containment.

DHS 163.14(5)(c)3.b.b. Collect one dust sample from the floor of a common area within containment for every 2,000 square feet of floor, and one dust sample from the floor of a common area outside containment. The dust sample taken outside containment shall be collected within 10 feet of the containment doorway.

DHS 163.14(5)(c)4.a.a. In at least 4 rooms, hallways, stairwells or other living areas in or near the work area, collect one dust sample from one interior windowsill or one window trough, if available, and one dust sample from the floor. If there are fewer than 4 rooms, hallways, stairwells or other living areas within the residential dwelling or child-occupied facility, collect samples from one interior windowsill or one window trough, if available, and one dust sample from the floors of all rooms, hallways, stairwells or other living areas.

DHS 163.14(5)(c)4.b.b. Collect one dust sample from the floor of a common area for every 2,000 square feet of floor.

DHS 163.14(5)(c)5.5. ‘Random sampling in multi-family dwellings.’ Following an interior activity in a multi-family dwelling with similarly constructed and maintained dwelling units, conduct random sampling for purposes of clearance provided that:

DHS 163.14(5)(c)5.a.a. The persons who perform the activities, including cleanup, do not know which dwelling units will be selected for the random sample.

DHS 163.14(5)(c)5.b.b. A sufficient number of dwelling units are selected for dust sampling to provide a 95% level of confidence that at least 95% of all dwelling units would pass clearance if all dwelling units were sampled. In a housing complex with more than 1,000 dwelling units, no sampled dwelling unit may fail clearance and a sufficient number of dwelling units shall be selected for dust sampling to provide a 95% level of confidence that no more than 5% of all dwelling units or 50 dwelling units, whichever is smaller, would fail clearance if all dwelling units were sampled.

DHS 163.14 NoteNote: For assistance in selecting the correct sample size, refer to the most current edition of the HUD “Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing,” available at https://www.hud.gov/program_offices/healthy_homes/lbp/hudguidelines.

DHS 163.14(5)(c)5.c.c. The randomly selected dwelling units are sampled and evaluated for clearance according to the procedures found in par. (c).

DHS 163.14(5)(c)6.6. ‘Visual inspection of exterior work area.’ Following an exterior activity, conduct a visual inspection. All horizontal surfaces on the exterior, including the ground, and all worker pathways shall be found to be cleaned and free of visible dust, debris, residue, and paint chips. If paint chips, dust, debris, or residue are present, the person who conducted the activity being cleared shall properly clean, disposing of any waste according to applicable federal, state and local government requirements.

DHS 163.14(5)(c)7.7. ‘Laboratory analysis.’ Have collected samples analyzed by a recognized laboratory to determine the detectable levels of lead that can be quantified numerically.